4. Joe wishes to hang a sign weighing 7.5 x 10^2 N so that cable A,
attached to the store makes a 30 degree angle as shown in the figure
below. Cable B is horizontal and attached to an adjoining building. a)
Draw a free-body diagram showing the forces and tension in the cables
b) Determine the tension in Cable B. *
Answers: 3
Physics, 21.06.2019 23:00
We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.
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Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational
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4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?
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Physics, 22.06.2019 18:00
Which is the most accurate name for the ionic compound cas?
Answers: 1
4. Joe wishes to hang a sign weighing 7.5 x 10^2 N so that cable A,
attached to the store makes a 3...
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